I hear muriatic acid does wonders for automotive paint. I learned it from this dude in Alerbamer. Said what ya do is, stop kissin yer sister for about 30 min (hard I know) then get some acid, throw it on the car and wait for the sizzle and bubbles, that's normal. Then after about 45 minutes, wash it off and your car will look like a delorean. Only lasts a day or so, then it turns orange. Try it!